The Host Age Related Occurrence of Alaria Alata in Wild Canids in Latvia

Overview

Journal Parasitol Res

Specialty Parasitology

Date 2018 Sep 16

PMID 30218314

Citations 6

Authors

Zanda Ozolina

Guna Bagrade

Gunita Deksne

Affiliations

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Abstract

The trematode Alaria alata has a complex life cycle in which carnivore mammals may become infected by feeding on mesocercariae-infected, second intermediate hosts or paratenic hosts. Afterwards, young flukes migrate through various organs of the definitive host, including the diaphragm and the lungs, before reaching the small intestine. The aim of the present study was to establish the prevalence and infection intensity of A. alata in carnivore mammals, the host age and related occurrence of different A. alata development stages in particular animals in Latvia. Overall, samples from 992 animals (539 red foxes, 411 raccoon dogs and 42 grey wolves) were examined using sedimentation and counting techniques to observe the presence of A. alata metacercariae and adult trematodes in each particular host. The present study, based on data collected over five hunting seasons (2010/2011-2014/2015), is a comprehensive study on the circulation of A. alata in wild canids in Latvia. A. alata was present in all species examined and the overall prevalence reached 86.2%. A significant positive correlation was observed between the burden of A. alata metacercariae and adult trematodes in raccoon dogs (r = 0.27, p = 0.001) and red foxes (r = 0.17, p = 0.0002). A significantly higher (p = 0.003) A. alata metacercariae mean intensity was observed in juvenile raccoon dogs compared to the one observed in adult raccoon dogs and red foxes from both age groups. The presence of both A. alata development stages in a particular animal concurrently and at different intensity levels may indicate primary infection and re-cured infection of the host.

Citing Articles

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Predicting the risk of infestation in wild boar on the basis of environmental factors.

Klich D, Nowicki M, Didkowska A, Belkot Z, Popczyk B, Wisniewski J Int J Parasitol Parasites Wildl. 2022; 17:257-262.

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Alaria alata mesocercariae prevalence and predilection sites in amphibians in Latvia.

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The occurrence of mesocercariae in wild boars () in north-eastern Poland.

Strokowska N, Nowicki M, Klich D, Belkot Z, Wisniewski J, Didkowska A Int J Parasitol Parasites Wildl. 2020; 12:25-28.

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